You can use images of single pieces of clothing (like products you saw on fast fashion sites), or full outfit photos (for example from an inspiration picture you saw on Instagram!).
Indikidual is a UK kids brand, that makes their clothing from GOTS certified organic cotton in small runs in factories they trust. They produce in Southern India with a small manufacturer that can supply them with small runs. They understand the importance of Fair Trade certifications but for them, using a small factory which they are able to visit regularly and have a good relationship with is much more important.